A pair of Union Pacific EMD's, an SD40N and an SD60, are working Proviso Yard outside Chicago, switching cuts of intermodal cars.

A UP SD40N is hard at work drilling cars on the east end of the Union Pacific's Proviso Yard on a sunny Saturday morning in Chicago.

UP SD40N 1948 leads a grain train west through Mount Prospect.

It's a hot July afternoon, and a rather short LPR49 is hustling eastbound with a pair of SD40Ns at the head. The gorgeous Palatine was rebuilt in 2001 and makes a great background for this train.

After clearing the connection at Seeger, the engineer begins to open it up as westbound grain empties pass by the nicely restored CNW depot in Mount Prospect.

UP 1622 (SD40N) takes the lead on shuffling cars in the North Yard in Denver, Colorado.

As the evening wears on and the last of the day's thunderheads kick up overhead Union Pacific's westbound Laramie 'Laser' charges up the Harriman Line (three track) as the old steam era water tank... (more)

With three North Little Rock SD40 rebuilds running point the westbound Laramie 'Laser' continues its westbound pull up Wyoming's Sherman Hill at Speer. In this view the Laser is wrapped around the... (more)

Locomotives in various stages of overhaul work line the north transfer table at the railroad’s Downing B. Jenks Shop in North Little Rock, Arkansas, on May 19, 2015, while a recently rebuilt Union... (more)

UP 1822 builds up a westbound intermodal with UP 1919 as an empty coal train passes by.

A pair of UP SD40Ns lead YPRCP west through Franklin Park.

Looking like the early 2000's Union Pacific, UP 1764 glides a transfer east through the concrete jungle of the West Bottoms in Kansas City, Missouri

The Minturn Local has just cleared the yard at Grand Jct. and "pours it on" as it accelerates Eastbound, heading towards Lacy.

UP SD40N 1999 leads YPRCP west through Franklin Park.